Sat, 10 Jan 2015 11:48:52 +0100 wenzelm tuned;
Sat, 10 Jan 2015 13:31:37 +0100 nipkow added lemma
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -2 +2 +10 +30 +100 +300 +1000 +3000 +10000 tip